Material: nylon strap + Velcro + nylon plastic buckle Product features: tourniquet, rotating military tourniquet, tactical arterial first aid tourniquet, one-handed operation, fast and practical, good hemostasis effect for accidental scrapes and cuts. Usage: Used to stop bleeding in the operating room. It can be used for injured limbs, frontline first aid in floods, tactical training, actual combat scenes, and can also be used for first aid for massive bleeding in hospitals. Instructions for use: 1. Place the tourniquet 5-250px above the wound and insert into the buckle loop around the limb. 2. Tighten the self-adhesive tape, stick it in the opposite direction, and turn the torsion bar until the bleeding stops. 3 Clamp the torsion bar into the retaining clip. After the excess self-adhesive tape is continued to be wrapped, it is sealed with fixed tape and the hemostasis time is recorded.